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CONTENTS

AtomS3U

SKU:K125

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Description

AtomS3U is a USB flash drive-shaped multifunctional development board featuring the ESP32-S3 chip from Espressif. It has a dual-core Xtensa LX7 processor with a main frequency of 240 MHz and built-in Wi-Fi functionality. Its interfaces include a USB Type-A port (supports OTG), 1 Grove port, a 6Pin@2.54mm header (including 4 GPIOs), and peripherals such as 1 PDM microphone, 1 infrared emitter, and 1 programmable RGB-LED. This product can be used in scenarios such as IoT human-computer interaction, voice input/recognition (STT), and IO control.

Tutorial

UiFlow2 UiFlow2
UiFlow2
This tutorial will introduce you to how to control the AtomS3U device using the UiFlow2 graphical programming platform

Features

  • ESP32-S3FN8@240Mhz, Xtensa LX7, WIFI, USB-OTG
  • Integrated programmable RGB LED and button
  • Built-in infrared emitter
  • Expandable pins and GROVE interface
  • Development Platform
    • UiFlow2
    • Arduino IDE
    • ESP-IDF
    • PlatformIO

Includes

  • 1 x AtomS3U

Applications

  • IoT controller
  • Voice recording, cloud STT recognition

Specifications

Specification Parameter
MCU ESP32-S3FN8@Xtensa LX7, WIFI, OTG, CDC
Microphone SPM1423
Interface USB-A
Grove Interface PORTA
2.54-6P Interface GND/VIN_5V/G14/G17/G42/G40
Microphone Sensitivity 94dB SPL@1KHz Typical: -22dBFS
Microphone SNR 94dB SPL@1KHz, A-weighted Typical: 61.4dB
Supported Input Sound Frequency 100Hz ~ 10KHz
Supported PDM Clock Frequency 1.0 ~ 3.25MHz
RGB Light WS2812
Product Dimensions 53.0 x 20.0 x 10.3mm
Product Weight 8.3g
Package Dimensions 114.2 x 65.6 x 20.6mm
Gross Weight 16.3g

Schematics

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PinMap

SPM1423 - PDM

AtomS3U G38 G39 3.3V GND
SPM1423 MIC_CLK MIC_DATA VCC GND

IR & WS2812 & BUTTON

AtomS3U G12 G35 G41
IR TX
WS2812 DIN
BUTTON SW

Ext Port-2.54 6P

AtomS3U GND VIN_5V G14 G17 G42 G40

HY2.0-4P

HY2.0-4P Black Red Yellow White
PORT.CUSTOM GND 5V G2 G1

Model Size

module size

Datasheets

Softwares

Arduino

UiFlow2

PlatformIO

[env:m5stack-atoms3]
platform = espressif32
board = esp32-s3-devkitc-1
framework = arduino
upload_speed = 1500000
monitor_speed = 115200
build_flags =
    -DESP32S3
    -DCORE_DEBUG_LEVEL=5
    -DARDUINO_USB_CDC_ON_BOOT=1
    -DARDUINO_USB_MODE=1
lib_deps =
    M5Unified=https://github.com/m5stack/M5Unified

Video